Container filling systems are described herein. A container filling system includes a container assembly, a nozzle, a first roller and a second roller. The container assembly includes a plurality of containers, each having a container volume and a fluid manifold defining a fluid pathway, wherein the fluid pathway is in fluid communication with the container volume of each of the plurality of containers. The nozzle is in fluid communication with the fluid pathway, wherein the nozzle directs flow from a fluid source into the fluid pathway. The nozzle separates the fluid manifold into a first portion and a second portion to permit the fluid manifold to advance relative to the nozzle.